gsDesign2

1.1.9

Group Sequential Design with Non-Constant Effect

1packages depend

8.6Kdownloads / year

92.9%test coverage

13/13checks pass

Overview

About

Maintained by Yujie ZhaoFirst published 2023-03-2013 releasesCRAN page ↗GitHub ↗

The goal of 'gsDesign2' is to enable fixed or group sequential design under non-proportional hazards. To enable highly flexible enrollment, time-to-event and time-to-dropout assumptions, 'gsDesign2' offers piecewise constant enrollment, failure rates, and dropout rates for a stratified population. This package includes three methods for designs: average hazard ratio, weighted logrank tests in Yung and Liu (2019) doi:10.1111/biom.13196, and MaxCombo tests. Substantial flexibility on top of what is in the 'gsDesign' package is intended for selecting boundaries.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("gsDesign2", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("Merck/gsDesign2")

Development version from Merck/gsDesign2. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-gsdesign2

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-gsDesign2

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-gsDesign2

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 9.8 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.97

92.9%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 1,845 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 78%
Return-value docs: 100%
References docs: 5%

Downloads

8.6K

CRAN downloads in the past year

Rank #7,475 · ~24/day · ~718/mo

Releases R versions

Daily download trend is not available in this view yet.

55730 days

1.4K90 days

8.6K1 year

Compare downloads with other packages →

Also on535 r2u2 autocran

Repository

GitHub ↗ merck/gsdesign2

33Stars

10Forks

6Open issues

2Open PRs

18Releases

2,170Commits

25Contributors

License GPL-3.0 · 2,170 commits · Last activity 2026-07-09 · +3.1% stars, 30d

Stars over time

2025-04-25 · 242026-07-07 · 33

Repository practices

Upstream repositoryBeta

9 development-tooling and community-health practices detected across 8 families in the upstream repository

Checks run against github.com/merck/gsdesign2 on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

CRAN release process (1)

cran-comments.md

Docs source (1)

README.Rmd

Show all practices

Automation and maintenance (1)

Dependabot

Lint, format, editor (2)

lintrRStudio project

Coverage (1)

Codecov

Git structural (1)

.gitattributes

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

20 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (15)

corpcor data.table dplyr gsDesign gtmethodsmvtnorm npsurvSS r2rtfstatssurvivaltibble tidyrutilsRcpp

LinkingTo (1)

Rcpp

Suggests (8)

covr ggplot2 cowplot kableExtra knitr rmarkdown simtrial testit

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

simtrial

Code & Tests

People & History

People (19)

Maintainer (1)

Yujie Zhao

Author, Maintainer

Authors (7)

Yujie Zhao

Author, Maintainer

Keaven Anderson

Author

John Blischak

Author · added in 1.1.0

Nan Xiao

Author

Yihui Xie

Author · added in 1.1.4

Jianxiao Yang

Author

Yilong Zhang

Author

Contributors (11)

Yi Cui

Contributor

Hiroaki Fukuda

Contributor · added in 1.1.1

Contributor

Contributor

Contributor

Contributor

Contributor · added in 1.1.2

Ping Yang

Contributor

Show 3 more contributors

Hongtao Zhang

Contributor

Shiyu Zhang

Contributor · added in 1.1.4

Yalin Zhu

Contributor

Merck & Co., Inc., Rahway, NJ, USA and its affiliates

Package Timeline

13 releases. Pick two to compare their code metrics. R releases are shown for context.

1.1.9Latest
2026-07-01 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
1.1.8
2026-02-12 · diff ↗
1.1.7
2025-11-19 · diff ↗
1.1.6
2025-09-11 · diff ↗
1.1.5
2025-06-27 · diff ↗
1.1.4
2025-06-06 · diff ↗
R
R 4.5.0 released · 2025-04-11
1.1.3
2024-11-15 · diff ↗
R
R 4.4.0 released · 2024-04-24
1.1.2
2024-04-09 · diff ↗
1.1.1
2024-02-09 · diff ↗
1.1.0
2023-08-23 · diff ↗
1.0.9
2023-06-20 · diff ↗
1.0.8
2023-05-01 · diff ↗
R
R 4.3.0 released · 2023-04-21

Show 2 earlier events

1.0.7
2023-03-20
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2023-03-20
Total releases: 13 / 3 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.1.0
Download size: 448 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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